Security readout for executives and security teams
Plain-English summary
A flaw in the Linux ROCCAT HID driver can let a local, low-privileged user trigger access to freed kernel memory during concurrent device-reader activity. Successful exploitation could compromise confidentiality, integrity, or availability. The issue is not remotely exploitable under the supplied CVSS vector.
Executive priority
Prioritize remediation on shared workstations, multi-user systems, and other hosts permitting untrusted local access. Treat this as a high-priority kernel update, but not an internet-edge emergency based on the local attack vector and absent exploitation evidence.
Technical view
roccat_report_event() traverses device->readers without holding readers_lock. A concurrent roccat_release() can remove and free a reader still being accessed, causing a kernel use-after-free. The stable fixes protect list traversal with the existing mutex.
Likely exposure
Exposure is concentrated on affected Linux kernels where the ROCCAT HID driver path is present and usable. Exploitation requires local access with low privileges; network-only attackers are not directly exposed. The supplied version list is ambiguous, so verify distribution-specific kernel builds against the cited fixes.
Exploitation context
The bundle does not establish active exploitation, and CVE-2026-43111 is not identified as a KEV entry. The CVSS 3.1 score is 7.8 because a local, low-privileged attacker could potentially affect kernel confidentiality, integrity, and availability without user interaction.
Researcher notes
The core condition is a race between unlocked readers-list traversal and release-time removal and freeing. The supplied record names no CWE and provides no exploitability proof. Version data includes repeated commit identifiers and unclear boundaries; branch-level exposure should therefore be established from vendor advisories or backport records.
Mitigation direction
- Apply the distribution kernel update containing the relevant cited stable fix.
- Reboot affected systems into the corrected kernel after installation.
- Until patched, limit untrusted local access on systems using the ROCCAT HID driver.
- Consult Linux distribution guidance when package versions do not map clearly to upstream commits.
Validation and detection
- Inventory running kernel builds and identify systems where the ROCCAT HID driver is present or used.
- Compare distribution package changelogs or source against the cited fix commit for each kernel branch.
- After remediation, confirm the corrected kernel is running, not merely installed.
- Reassess local account exposure on any system awaiting an update.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2026-43111 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9LinuxVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/20dca865460f7943cf70afca274b60dac371f546CVE reference, Linux
- https://git.kernel.org/stable/c/441689e3103694caa3e2d62b7d57c7bccefa5e37CVE reference, Linux
- https://git.kernel.org/stable/c/181ea51ab0f6370842c5b49cfb86824253a1189eCVE reference, Linux
- https://git.kernel.org/stable/c/e6a445513fbc6a0329d2d5ff375b6725750ec5a6CVE reference, Linux
- https://git.kernel.org/stable/c/e16a6d11bd77b81632165f02cf0d5946df74b3b7CVE reference, Linux
- https://git.kernel.org/stable/c/36bb2d0b915014bbdc5044982b31b57b78045b93CVE reference, Linux
- https://git.kernel.org/stable/c/bca0b595e15450dd66b1153c76c4ef1087ee011bCVE reference, Linux
- https://git.kernel.org/stable/c/d802d848308b35220f21a8025352f0c0aba15c12CVE reference, Linux
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.